4.7.Â DEFCON 2 – The Number of the Beast

Then there are the makefiles that expect certain commands,
such as changing to a different directory, to not affect
other commands in a target's creation script. You can solve
this is either by going back to executing one shell per
command (which is what the -B flag forces
PMake to do), which
slows the process down a good bit and requires you to use
semicolons and escaped newlines for shell constructs, or by
changing the makefile to execute the offending command(s) in
a subshell (by placing the line inside parentheses), like
so:

This will always execute the three makes (even if the
-n
flag was given) because of the combination of the
::
operator and the .MAKE attribute.
Each command will change to the proper directory to perform
the install, leaving the main shell in the directory in
which it started.